The creator of the Yahoo! Traffic/Google Maps hack has added a link to a fascinating new Google Maps tool - Google Maps Wallpapers. The Google Maps satellite tiles merger tool is described as:
gMerge is a python script that merges Google Maps satellite "tiles" in order to produce a wallpaper (or even a poster!).
You can choose from one of your own locations, or select from some of the more popular Google Sightseeing captures as well! This is a breakthrough tool for people that want to create Windows backgrounds or print images from Google Maps.
Here is an example image from Lake Louise, Alberta, Canada:
(Click the image to see it in full size)